/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.apache.commons.pipeline.driver.control;

import java.util.ArrayList;
import java.util.EventObject;
import java.util.List;
import org.apache.commons.pipeline.PipelineLifecycleJob;
import org.apache.commons.pipeline.StageEventListener;

/**
 *
 */
public abstract class AbstractDriverController implements StageEventListener {
    
     /**
     * This list contains the PriorityStageDriver instances that are being
     * managed by the controller.
     */
    protected List<PrioritizableStageDriver> drivers = new ArrayList<PrioritizableStageDriver>();
    
    protected List<StageProcessTimingEvent> events = new ArrayList<StageProcessTimingEvent>();    
        
    protected DriverControlStrategy driverControl;
	
   /** Creates a new instance of AbstractDriverController */
    public AbstractDriverController() {
    }

    
    public void addManagedStageDriver(PrioritizableStageDriver driver) {
        this.drivers.add(driver);
    }

    
    public synchronized void notify(EventObject ev) {
        if (ev instanceof StageProcessTimingEvent) {
            events.add((StageProcessTimingEvent) ev);
            notifyAll();
        }
    }

    
    public void setDriverControlStrategy(DriverControlStrategy driverControl) {
    	this.driverControl = driverControl;
    }
    
}
